Moneydance contains support for extensions or plugins. These extensions have the ability to add new features and services that weren't originally built-in to Moneydance. Each extension is available in a self-contained file. Moneydance can add extensions from files downloaded from this page or using the built-in extension manager (note: the extension manager is not allowed in the Mac App Store version of Moneydance). If you have purchased Moneydance through the Mac App Store go here for instructions on installing extensions.
Every extension includes a digital signature that is verified each time the extension is loaded. Every extension must be audited and signed by The Infinite Kind before Moneydance will load it. Extensions with invalid or missing signatures will generate an error and will not be loaded unless the customer overrides the error.